Japan's two leading airlines grounded their fleets of Boeing 787s on Wednesday after one of the Dreamliner passenger jets made an emergency landing, heightening safety concerns over a plane many see as the future of commercial aviation.

TOKYO: Japan's two leading airlines grounded their fleets of Boeing 787s on Wednesday after one of the Dreamliner passenger jets made an emergency landing, heightening safety concerns over a plane many see as the future of commercial aviation.

ANA flight 692 left Yamaguchi Airport in western Japan shortly after 8am local time (2300 GMT Tuesday) bound for Haneda Airport near Tokyo, a 65-minute flight. About 18 minutes into the flight, at 30,000 feet, the plane began a descent. It descended to 20,000 feet in about four minutes and made an emergency landing 16 minutes later.

All Nippon Airways Co said it was grounding all 17 of its 787s and Japan Airlines Co said it suspended all 787 flights scheduled for Wednesday. ANA said its planes could be back in the air as soon as Thursday once checks were completed. The two carriers operate around half of the 50 Dreamliners delivered by Boeing to date.

Wednesday's incident follows a series of mishaps for the new Dreamliner. The sophisticated plane, the world's first mainly carbon-composite airliner, has suffered fuel leaks, a battery fire, wiring problem, brake computer glitch and cracked cockpit window in recent days.

India is reviewing the safety situation of Boeing Co Dreamliners and will also talk to component makers of the US aircraft but there are no plans to ground the planes, the aviation regulator said on Wednesday.

"We are not having any problem with our Dreamliners. The problems we had earlier were fixed," Arun Mishra, Director General of Civil Aviation, said.